Beckley, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.1 °C (low) to 16.3 °C (high). Annual precipitation averages 1103.6 Millimeters. Beckley is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.6 °C | 4.2 °C | 76.2 mm |
| February | -4.5 °C | 6.2 °C | 73.66 mm |
| March | -0.9 °C | 10.7 °C | 98.04 mm |
| April | 4.4 °C | 17.3 °C | 98.3 mm |
| May | 9.4 °C | 21.5 °C | 119.13 mm |
| June | 13.8 °C | 24.9 °C | 105.41 mm |
| July | 15.8 °C | 26.6 °C | 131.32 mm |
| August | 15.1 °C | 26.1 °C | 91.44 mm |
| September | 11.7 °C | 23.3 °C | 84.84 mm |
| October | 5.4 °C | 17.6 °C | 65.79 mm |
| November | -0.2 °C | 11.5 °C | 68.58 mm |
| December | -3.3 °C | 6.1 °C | 90.93 mm |
| Annual | 5.1 °C | 16.3 °C | 1103.64 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |